Svend Tollak Munkejord
Chief Scientist- Name
- Svend Tollak Munkejord
- Title
- Chief Scientist
- Phone
- 473 78 042
- Department
- Gas Technology
- Office
- Trondheim
- Company
- SINTEF Energi AS
Captured CO2 needs to be transported from the points of capture to the storage sites. Task 7 will provide knowledge and methods to ensure that the transport is safe and efficient. Running-ductile fractures in CO2 pipelines, ship transport, impurities and non-equilibrium flow of CO2 is being investigated.
The CCS value chain roughly consists of three phases: Capture, Transport and Storage. This Task will provide knowledge to ensure safe and efficient CO2 transport.
To continuously evaluate plans and results related to the Task, an industrial interest group has been put together, consisting of members from Aker Solutions, Gassco, Larvik Shipping, Shell, Statoil and Total. The group will remain operational throughout the lifetime of the Task, and new partners are welcome.
As both deployment cases involve transportation, this Task is relevant for both DC1 and DC2, and it is related to other tasks, in particular:
The Task will:
The ECCSEL depressurization facility became operational in 2019. This facility is specifically instrumented to record fast changes in pressure and temperature as pressure waves propagate in a pipe. These data contribute to safe and efficient CO2 transport through validation of numerical models which enable us to better design and operate CO2-transport systems.
Gas and liquid experiments have been conducted with the rig and we obtained preliminary results with high resolution and consistency. The data will be used to validate and improve the fluid part of our coupled fluid-structure (FE-CFD) running-ductile-fracture (RDF) prediction model, as well as models for transient (time-varying) multiphase (gas-liquid and gas-liquid- solid) flow of CO2 in general. The data will be further analysed and published in 2020.
In addition, we improved our coupled FE-CFD model for predicting running-ductile fracture in CO2 pipelines by improving our material-model calibration method and by more efficient thermodynamics calculations.
The RDF model can be made available to industry. A way to do this is outlined in the document ‘Fracture-propagation-control tool for industry – proposal for a pre-project’ submitted to the Task Family. Putting the model into industrial use could lead to benefits including reduced cost and design margins and lowered project risk.
Our postdoc at The University of Zurich has developed a new numerical method for compressible (‘low-Mach’) multiphase flow. This could lead to more efficient simulation tools for multiphase flow of CO2, that is, simulation tools that can handle a large range of flow situations in a robust and numerically efficient way.
A work package on model-based design tools for fracture design and control was part of a bilateral Norway-China application entitled "Digital solutions for predictive maintenance and structural integrity assessment of energy pipelines – Doorstep". This shows that the work attracts interest outside NCCS.
The work focused on CO2 transport by pipelines. We established a roadmap for the development of an engineering tool for fracture propagation control in CO2-transport pipelines, which can help ensure safe and cost-efficient CO2 transport. By engineering tool, we mean a tool that can be used with relative ease and with short runtimes by an engineer using a desktop computer, as opposed to heavier finite-element (FE) and computational fluid dynamics (CFD) simulations. The SINTEF coupled FE-CFD code is an essential part of the development, due to the physical insights that can be gained through its use.
Several publications have hypothesized that the CO2 flow exiting the pipeline through a fracture is not in equilibrium. We made some progress in the modelling of non-equilibrium flow.
Work was also performed on the validation of our procedure for calibrating the material model in the FE-CFD code.
The NCCS industry partners, in particular Aker Solutions, Gassco, Larvik Shipping, Shell, Statoil and Total are following up and providing input to the work.
Journal Publications
2020:
Conference Publications
2019:
2018:
Pop Science Articles
2019:
2018: